osrs-json-hiscores/src/utils/helpers.ts

import axios from 'axios';
import * as ua from 'useragent-generator';
import { Gamemode, SkillName, ActivityName } from '../types';
import {
  GAMEMODE_URL,
  STATS_URL,
  SCORES_URL,
  SKILLS,
  ACTIVITIES,
} from './constants';

export const getStatsURL = (gamemode: Gamemode, rsn: string) =>
  `${GAMEMODE_URL[gamemode]}${STATS_URL}${encodeURIComponent(rsn)}`;

export const getPlayerTableURL = (gamemode: Gamemode, rsn: string) =>
  `${GAMEMODE_URL[gamemode]}${SCORES_URL}table=0&user=${encodeURIComponent(
    rsn
  )}`;

export const getSkillPageURL = (
  gamemode: Gamemode,
  skill: SkillName,
  page: number
) =>
  `${GAMEMODE_URL[gamemode]}${SCORES_URL}table=${SKILLS.indexOf(
    skill
  )}&page=${page}`;

export const getActivityPageURL = (
  gamemode: Gamemode,
  activity: ActivityName,
  page: number
) =>
  `${
    GAMEMODE_URL[gamemode]
  }${SCORES_URL}category_type=1&table=${ACTIVITIES.indexOf(
    activity
  )}&page=${page}`;

export const numberFromElement = (el: Element | null) => {
  const { innerHTML } = el || {};
  const number = innerHTML?.replace(/[\n|,]/g, '') ?? '-1';
  return parseInt(number, 10);
};

export const rsnFromElement = (el: Element | null) => {
  const { innerHTML } = el || {};
  return innerHTML?.replace(/\uFFFD/g, ' ') || '';
};

export const httpGet = (url: string) => {
  return axios.get(url, {
    headers: {
      // without User-Agent header requests may be rejected by DDoS protection mechanism
      'User-Agent': ua.firefox(80)
    }
  });
};